US5507743A
Expired / Lapsed
US
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Coiled RF electrode treatment apparatus
Assignee: Venture Banking Group
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Filing: 1994-08-16
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Granted: 1996-04-16
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Expires: 2014-08-16
Abstract
Abstract An RF treatment apparatus provides multi-modality treatment for tumors and other desired tissue masses, and includes an RF indifferent electrode and an RF active electrode. The RF indifferent electrode has a compacted, non-deployed state, and an expanded deployed state. In the deployed state, the RF indifferent electrode forms a helical structure with four or less coils that surround an exterior of the tumor. The indifferent electrode becomes a microwave antenna when it is coupled to a microwave source. RF ablation energy is delivered to the tumor by the RF active electrode after it has been introduced into the tumor. Both electrodes are coupled to an RF energy source. The indifferent electrode is coupled to a microwave source. Either or both of the electrodes is hollow and include fluid distribution ports for the purpose of providing a chemotherapeutic agent to the tumor site. Ablation energy is supplied to the tumor by the active electrode. The RF indifferent electrode then is switched and becomes a microwave antenna, providing hyperthermia to the tumor and surrounding area. Thereafter, a chemotherapeutic agent is supplied to the tumor site.
Inventors
- 👤 Stuart D. Edwards
- 👤 Hugh R. Sharkey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:24
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1477; A61B18/1482; A61B18/18; A61B18/1815; A61N; A61N5/00; A61N5/02; A61N5/04; A61N5/045; A61B18/1402; A61B18/1492; A61B2018/00005; A61B2018/00011; A61B2018/00053; A61B2018/00184; A61B2018/00196; A61B2018/00315; A61B2018/00452; A61B2018/00476; A61B2018/00571; A61B2018/00577; A61B2018/00636; A61B2018/00666; A61B2018/00678; A61B2018/00696; A61B2018/00702; A61B2018/00708; A61B2018/00726; A61B2018/00761; A61B2018/00773; A61B2018/00779; A61B2018/00791; A61B2018/00875; A61B18/1206; A61B2018/124; A61B2018/1246; A61B2018/1253; A61B2018/126; A61B2018/1405; A61B2018/1425; A61B2018/1435; A61B18/16; A61B2018/162; A61B2218/00; A61B2218/001; A61B2218/002; A61M; A61M25/00; A61M25/0067; A61M25/0068; A61M25/007
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
160 words
An RF treatment apparatus for treatment of a tumor, comprising: an RF indifferent electrode having a compacted, non-deployed state, and an expanded deployed state, the RF indifferent electrode forming a helical structure with one or more coils in the deployed state that surround an exterior of the tumor, the indifferent electrode becoming a microwave antenna when coupled to a microwave source; an RF active electrode, wherein the RF active electrode is introduced at least partially into the tumor and the RF indifferent electrode is introduced in a surrounding relationship to the tumor prior to supplying RF energy to the electrodes; a deployment apparatus for deploying the RF indifferent electrode from the non-deployed state to the expanded deployed state; a switching device coupled to the RF indifferent electrode that permits the RF indifferent electrode to deliver microwave or RF energy; an RF energy source coupled to the indifferent and active electrodes; and a microwave energy source coupled to the indifferent electrode.
Claim 2
Dependent Claim
160 words
An RF treatment apparatus for treatment of a tumor, comprising: an RF indifferent electrode having a compacted, non-deployed state, and an expanded deployed state, the RF indifferent electrode forming a helical structure with one or more coils in the deployed state that surround an exterior of the tumor, the indifferent electrode becoming a microwave antenna when coupled to a microwave source; an RF active electrode, wherein the RF active electrode is introduced at least partially into the tumor and the RF indifferent electrode is introduced in a surrounding relationship to the tumor prior to supplying RF energy to the electrodes; a deployment apparatus for deploying the RF indifferent electrode from the non-deployed state to the expanded deployed state; a switching device coupled to the RF indifferent electrode that permits the RF indifferent electrode to deliver microwave or RF energy; an RF energy source coupled to the indifferent and active electrodes; and a microwave energy source coupled to the indifferent electrode.
Claim 3
Dependent Claim
20 words
The RF treatment apparatus of claim 1, wherein the indifferent electrode has three or less coils in the deployed state.
Claim 4
Dependent Claim
21 words
The RF treatment apparatus of claim 1, wherein the indifferent electrode is hollow and includes a plurality of fluid distribution ports.
Claim 5
Dependent Claim
18 words
The RF treatment apparatus of claim 3, wherein the indifferent electrode is coupled to a chemotherapeutic agent source.
Claim 6
Dependent Claim
21 words
The RF treatment apparatus of claim 1, wherein the active electrode is hollow and includes a plurality of fluid distribution ports.
Claim 7
Dependent Claim
18 words
The RF treatment apparatus of claim 5, wherein the active electrode is coupled to a chemotherapeutic agent source.
Claim 8
Dependent Claim
16 words
The RF treatment apparatus of claim 1, wherein the active electrode has a sharpened distal end.
Claim 9
Dependent Claim
16 words
The RF treatment apparatus of claim 1, Wherein the indifferent electrode has a sharpened distal end.
Claim 10
Dependent Claim
22 words
The RF treatment apparatus of claim 1, further comprising: at least one thermal sensor positioned on a surface of the indifferent electrode.
Claim 11
Dependent Claim
22 words
The RF treatment apparatus of claim 1, further comprising: at least one thermal sensor positioned on a surface of the active electrode.
Claim 12
Dependent Claim
17 words
The RF treatment apparatus of claim 1, wherein the indifferent electrode is made of a memory metal.
Claim 13
Dependent Claim
15 words
The RF treatment apparatus of claim 1, wherein the indifferent electrode is made of nitinol.
Claim 14
Dependent Claim
202 words
An RF treatment apparatus for treatment of a tumor, comprising: an introducing catheter with a catheter distal end and a catheter proximal end; An RF indifferent electrode positioned at least partially in the introducing catheter in a compacted, non-deployed state, and advanced from the introducing catheter in an expanded deployed state, the RF indifferent electrode forming a helical structure with one or more coils in the deployed state that surround an exterior of the tumor, the indifferent electrode becoming a microwave antenna when coupled to a microwave source; an active electrode positioned at least partially in the introducing catheter and advanced from the catheter distal end and introduced, wherein the RF active electrode is introduced at least partially into the tumor and the RF indifferent electrode is introduced in a surrounding relationship to the tumor prior to supplying RF energy to the electrodes; a deployment apparatus for deploying the RF indifferent electrode from the nondeployed state to the expanded state; a switching device associated with the RF indifferent electrode that permits the RF indifferent electrode to deliver microwave or RF energy; an RF energy source coupled to the indifferent and active electrodes; and a microwave energy source coupled to the indifferent electrode.
Claim 15
Dependent Claim
202 words
An RF treatment apparatus for treatment of a tumor, comprising: an introducing catheter with a catheter distal end and a catheter proximal end; An RF indifferent electrode positioned at least partially in the introducing catheter in a compacted, non-deployed state, and advanced from the introducing catheter in an expanded deployed state, the RF indifferent electrode forming a helical structure with one or more coils in the deployed state that surround an exterior of the tumor, the indifferent electrode becoming a microwave antenna when coupled to a microwave source; an active electrode positioned at least partially in the introducing catheter and advanced from the catheter distal end and introduced, wherein the RF active electrode is introduced at least partially into the tumor and the RF indifferent electrode is introduced in a surrounding relationship to the tumor prior to supplying RF energy to the electrodes; a deployment apparatus for deploying the RF indifferent electrode from the nondeployed state to the expanded state; a switching device associated with the RF indifferent electrode that permits the RF indifferent electrode to deliver microwave or RF energy; an RF energy source coupled to the indifferent and active electrodes; and a microwave energy source coupled to the indifferent electrode.
Claim 16
Dependent Claim
20 words
The RF treatment apparatus of claim 13, further comprising: a handle attached to the proximal end of the introducing catheter.
Claim 17
Dependent Claim
53 words
The RF treatment apparatus of claim 14, wherein the deployment apparatus is an advancing cam positioned at least partially in the introducing catheter, the advancing cam attaching to a proximal end of the indifferent and active electrodes for advancing and retracting the indifferent and active electrodes in and out of the introducing catheter.
Claim 18
Dependent Claim
20 words
The RF treatment apparatus of claim 13, wherein the indifferent electrode has three or less coils in the deployed state.
Claim 19
Dependent Claim
21 words
The RF treatment apparatus of claim 13, wherein the indifferent electrode is hollow and includes a plurality of fluid distribution ports.
Claim 20
Dependent Claim
18 words
The RF treatment apparatus of claim 17, wherein the indifferent electrode is coupled to a chemotherapeutic agent source.
Claim 21
Dependent Claim
21 words
The RF treatment apparatus of claim 13, wherein the active electrode is hollow and includes a plurality of fluid distribution ports.
Claim 22
Dependent Claim
18 words
The RF treatment apparatus of claim 19, wherein the active electrode is coupled to a chemotherapeutic agent source.
Claim 23
Dependent Claim
16 words
The RF treatment apparatus of claim 13, wherein the active electrode has a sharpened distal end.
Claim 24
Dependent Claim
16 words
The RF treatment apparatus of claim 13, wherein the indifferent electrode has a sharpened distal end.
Claim 25
Dependent Claim
22 words
The RF treatment apparatus of claim 13, further comprising: at least one thermal sensor positioned on a surface of the indifferent electrode.
Claim 26
Dependent Claim
22 words
The RF treatment apparatus of claim 13, further comprising: at least one thermal sensor positioned on a surface of the active electrode.
Claim 27
Dependent Claim
17 words
The RF treatment apparatus of claim 13, wherein the indifferent electrode is made of a memory metal.
Claim 28
Dependent Claim
122 words
An RF treatment apparatus for treatment of a tumor, comprising: an RF indifferent electrode having a compacted, non-deployed state, and an expanded deployed state, the RF indifferent electrode forming a helical structure with one or more coils in the deployed state that surround an exterior of the tumor; an RF active electrode that is introduced into the tumor to provide RF ablation of the tumor, wherein the RF active electrode is introduced at least partially into the tumor and the RF indifferent electrode is introduced in a surrounding relationship to the tumor; a deployment apparatus for deploying the RF indifferent electrode from the non-deployed state to the expanded deployed state; and an RF energy source coupled to the indifferent and active electrodes.
Claim 29
Dependent Claim
122 words
An RF treatment apparatus for treatment of a tumor, comprising: an RF indifferent electrode having a compacted, non-deployed state, and an expanded deployed state, the RF indifferent electrode forming a helical structure with one or more coils in the deployed state that surround an exterior of the tumor; an RF active electrode that is introduced into the tumor to provide RF ablation of the tumor, wherein the RF active electrode is introduced at least partially into the tumor and the RF indifferent electrode is introduced in a surrounding relationship to the tumor; a deployment apparatus for deploying the RF indifferent electrode from the non-deployed state to the expanded deployed state; and an RF energy source coupled to the indifferent and active electrodes.
Claim 30
Dependent Claim
20 words
The RF treatment apparatus of claim 26, wherein the indifferent electrode has three or less coils in the deployed state.
Claim 31
Dependent Claim
21 words
The RF treatment apparatus of claim 26, wherein the indifferent electrode is hollow and includes a plurality of fluid distribution ports.
Claim 32
Dependent Claim
18 words
The RF treatment apparatus of claim 28, wherein the indifferent electrode is coupled to a chemotherapeutic agent source.
Claim 33
Dependent Claim
21 words
The RF treatment apparatus of claim 26, wherein the active electrode is hollow and includes a plurality of fluid distribution ports.
Claim 34
Dependent Claim
18 words
The RF treatment apparatus of claim 30, wherein the active electrode is coupled to a chemotherapeutic agent source.
Claim 35
Dependent Claim
16 words
The RF treatment apparatus of claim 26, wherein the active electrode has a sharpened distal end.
Claim 36
Dependent Claim
16 words
The RF treatment apparatus of claim 26, wherein the indifferent electrode has a sharpened distal end.
Claim 37
Dependent Claim
122 words
An RF treatment apparatus for treatment of a tumor, comprising; an RF active electrode having a compacted, non-deployed state, and an expanded deployed state, the RF active electrode forming a helical structure with one or more coils in the deployed state that surround an exterior of the tumor; an RF indifferent electrode that is introduced into the tumor to provide RF ablation of the tumor, wherein the RF indifferent electrode is introduced at least partially into the tumor and the RF active electrode is introduced in a surrounding relationship to the tumor; a deployment apparatus for deploying the RF active electrode from the non-deployed state to the expanded deployed state; and an RF energy source coupled to the indifferent and active electrodes.
Claim 38
Dependent Claim
122 words
An RF treatment apparatus for treatment of a tumor, comprising; an RF active electrode having a compacted, non-deployed state, and an expanded deployed state, the RF active electrode forming a helical structure with one or more coils in the deployed state that surround an exterior of the tumor; an RF indifferent electrode that is introduced into the tumor to provide RF ablation of the tumor, wherein the RF indifferent electrode is introduced at least partially into the tumor and the RF active electrode is introduced in a surrounding relationship to the tumor; a deployment apparatus for deploying the RF active electrode from the non-deployed state to the expanded deployed state; and an RF energy source coupled to the indifferent and active electrodes.
Claim 39
Dependent Claim
20 words
The RF treatment apparatus of claim 34, wherein the active electrode has three or less coils in the deployed state.
Claim 40
Dependent Claim
21 words
The RF treatment apparatus of claim 34, wherein the active electrode is hollow and includes a plurality of fluid distribution ports.
Claim 41
Dependent Claim
18 words
The RF treatment apparatus of claim 36, wherein the active electrode is coupled to a chemotherapeutic agent source.
Claim 42
Dependent Claim
21 words
The RF treatment apparatus of claim 34, wherein the indifferent electrode is hollow and includes a plurality of fluid distribution ports.
Claim 43
Dependent Claim
18 words
The RF treatment apparatus of claim 38, wherein the indifferent electrode is coupled to a chemotherapeutic agent source.
Claim 44
Dependent Claim
16 words
The RF treatment apparatus of claim 34, wherein the indifferent electrode has a sharpened distal end.
Claim 45
Dependent Claim
16 words
The RF treatment apparatus of claim 34, wherein the active electrode has a sharpened distal end.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-04-16 | 1999-10-16 | 2000-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-16 | 2003-10-16 | 2004-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-16 | 2007-10-16 | 2008-04-16 | $7700.00 | Window Closed / Lapsed |